ABSTRACT Recently, in Japan, there is a case that the pile end of the building did not reach the firm layer because the soil layer was complicated. In such a case with piles with insufficient length, the existing pile modelling method cannot be applied. Therefore, we tried to model the load–settlement relationship of a pile with insufficient length through a two-dimensional (2D) analysis. Firstly, we perform three-dimensional (3D) analyses to examine the load–settlement relationship of a pile with insufficient length. Thus, a degradation parameter to express the effect of insufficient length of the pile is proposed for practical 2D FEM analysis. Finally, we conduct a feasibility study with the proposed parameter in 2D model. It is expected that the proposed model can be used as a reference for verifying the practical performance of buildings supported by incompletely end-supported piles through a 2D analysis.

中文翻译：

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考虑桩长不足从承重地层获得支护的简化方法

摘要 最近，在日本，由于土层复杂，建筑桩端未达到牢固层的情况发生。在桩长不足的情况下，现有的桩建模方法无法应用。因此，我们尝试通过二维 (2D) 分析模拟长度不足的桩的荷载-沉降关系。首先，我们进行三维 (3D) 分析以检查长度不足的桩的荷载-沉降关系。因此，提出了一个退化参数来表达桩长度不足的影响，用于实际的 2D FEM 分析。最后，我们使用 2D 模型中的建议参数进行可行性研究。